[Year 12 SofDev] usability - NF requirement or constraint or both???

[Walker, Michael A]

I think Katherine was using the abbreviation NF as Non Functional as in non functional requirement, ie, a requirement in software that is not directly something it explicitly does; as opposed to NF as Normal Form as in reducing redundancy in a database.

HTH,
Michael Walker,
Doncaster Secondary College.

Sent from my Android phone using TouchDown (www.nitrodesk.com)

-----Original Message-----
From: Robert Hind [robert at yinnar.com]
Received: Sunday, 06 Dec 2015, 9:15AM
To: 'Year 12 Software Development Teachers' Mailing List' [sofdev at edulists.com.au]
Subject: Re: [Year 12 SofDev] usability - NF requirement or constraint or both???

I don't see usabilty itself as an NF requirement. The NF requirement is to minimise data redundancy. Decreased redundancy then increases the usability of the database.

Robert Hind
Ex Traralgon and Ashwood
Retired

________________________________
From: sofdev-bounces at edulists.com.au [mailto:sofdev-bounces at edulists.com.au] On Behalf Of Young, Katherine A
Sent: Sunday, 6 December 2015 8:59 AM
To: sofdev at edulists.com.au
Subject: [Year 12 SofDev] usability - NF requirement or constraint or both???

Hi all,

I’ve attached a graphic organizer that will hopefully get my kids thinking more carefully during their analysis of a problem, need or opportunity. Do others use something similar? I’d love to hear your feedback.

However, in doing so I realized that usability is listed as both a non-functional requirement AND a constraint. My brain had been thinking that a social constraint such the users’ level of expertise or some other "audience characteristic" would impose a non-functional requirement in relation to the usability of a solution.

Could someone please explain the difference between usability as a constraint and as a NF requirement? I know that I WILL be asked the same question :-/

Thank you!




Regards,

[cid:089070622 at 05122015-3766]


Katherine Young
11C Mentor
Mathematics & Information Technology Teacher

Castlemaine Secondary College
Etty Street Campus
Etty Street
Castlemaine VIC 3450
T: (03) 5479 4222   |  F: (03) 5479 4230


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